Rinnai RU199IN Sensei™ Residential 199,000 BTU Natural Gas Tankless Water Heater Indoor

Product Description

The Rinnai RU199IN Sensei™ is a high-efficiency indoor natural gas tankless water heater designed to deliver continuous hot water for residential applications. With up to 199,000 BTU input, condensing technology, and a stainless steel heat exchanger, this unit provides powerful performance in a compact wall-mounted design.

• Rinnai 199,000 BTU tankless water heater for demanding residential hot water needs
• Provides continuous hot water for multiple fixtures and applications
• Condensing design supports high-efficiency operation
• Corrosion-resistant stainless steel heat exchanger for long-term durability
• Indoor, wall-mounted installation saves floor space
• Flexible direct vent options support different installation layouts
• Includes isolation valves and a pressure relief valve for easier maintenance
• Ultra Low NOx emissions and Energy Star-listed performance
• Wi-Fi compatible for remote monitoring with optional accessories
• Flow range up to 9.8 GPM, depending on temperature rise

Product Highlights

This Rinnai Sensei™ tankless water heater provides an endless supply of hot water with energy-efficient operation and is Wi-Fi compatible for remote monitoring.

• Best for: homes needing a Rinnai tankless water heater 199,000 BTU system for high-demand, continuous indoor hot water.

Product Information

Standard Information

• Brand: RINNAI
• Manufacturer Part Number: RU199IN
• Country of Origin: Japan

Technical Specifications

• Fuel Type: Natural Gas
• Installation Location: Indoor
• UPC: 766156009532
• Type: Tankless Water Heater
• Product Depth: 11 19/48 Inches
• Product Width: 18 1/2 Inches
• CSA Listed: Yes
• Product Height: 26 19/48 Inches
• Frequency: 60 Hz
• Shipping Weight: 74 Pounds
• Cold Water Inlet: 3/4 Inch
• Hot Water Outlet: 3/4 Inch
• AHRI Certified: Yes
• Vent Type: Direct Vent
• Minimum Flow Rate: 0.4 GPM
• Gas Connection Size: 3/4 Inch
• Mount Type: Wall
• Application: Residential
• Product Line: Sensei
• Storage Type: Tankless
• Energy Star Listed: Yes
• Includes Pump: No
• Uniform Energy Factor: 0.93
• Maximum Input Capacity: 199000 BTU
• Minimum Input Capacity: 15000 BTU
• Combustion Type: Condensing
• Ultra Low NOx Emissions: Yes
• Parts Warranty: 5 Years
• AHRI Reference Number: 10595468
• Maximum Altitude: 10200 Feet
• Product Category: Water Heater – Tankless
• Product Sub-line: Super High Efficiency Plus (SE+)
• Venting Category: IV
• Primary Vent Pipe Diameter: 2 Inches
• Gas Conversion Kit: Not Available
• Heat Exchanger Warranty: 15 Years
• Flow Rate at 40F Temperature Rise: 9.8 GPM
• Flow Rate at 45F Temperature Rise: 8.4 GPM
• Flow Rate at 50F Temperature Rise: 7.6 GPM
• Flow Rate at 60F Temperature Rise: 6.4 GPM
• Flow Rate at 70F Temperature Rise: 5.5 GPM
• Phase: 1
• Energy Factor: 0.96
• Depth (Inches): 11-1/2″
• Width (Inches): 18-1/2″
• Height (Inches): 26.4″
• Flow Range (GPM): 0.26 – 9.8
• Flow Rate: 0.26 to 9.8 gpm
• Altitude: 10200 ft
• Amperage Rating: 4 A
• BTU Rating: 15000 to 199000 Btu/hr
• Connection Type: NPT
• Efficiency: 0.95 %
• Model: REU-N3237FF-US
• Mounting Type: Wall
• Power Rating: 84 W
• Pressure Rating: 50 to 150 psi
• Series: RU Series
• Standby Loss: 1.3 W
• Temperature Rating: 98 to 120 deg F
• Voltage Rating: 120 V
• BtuH: 199,000
• Voltage: AC 120 Volts, 60 Hz
• Gas Type: Natural Gas
• Temp. Range: 98-185 deg. F
• Gas Connection: 3/4″ MNPT